Know how to mod a music creating app to play sound over iPod for improv??

Basically I'm trying to see if it's possible to get the native music player or a similar app to multitask with KORGS iKaosillator for goofin along with my music library.
I've tried searching for a few days and can't filter through googles advertisements acting as search results to find out how I may be able to accomplish this...

Any info or link refrence would be awesome,
Thanks if you read this, super thanks if you reply!